Home / 28,781.07-43,129.61-12,751.27

Finding the Fourth Proportional to 28,781.07, 43,129.61 and 12,751.27

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Solution

The fourth proportional to 28,781.07, 43,129.61 and 12,751.27 is: 19,108.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,781.07 : 43,129.61 = 12,751.27 : x
  2. Step 2: Convert to fraction form
    28,781.07/43,129.61 = 12,751.27/x
  3. Step 3: Cross multiply
    28,781.07x = 43,129.61 × 12,751.27
  4. Step 4: Simplify right side
    28,781.07x = 549,957,492.67
  5. Step 5: Solve for x
    x = 549,957,492.67/28,781.07
  6. Step 6: Final answer
    x = 19,108.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.